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2014 Rocky Mountain

Thunderbolt 750

A 27.5″ aluminum frame full suspension trail bike with upper mid-range components.
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Manufacturer Price

$3,299
Weight29.4 lbs  
FrameAluminum
SuspensionFull, 120 / 120mm
ForkFox Float 32
ShockFox
Wheels27.5″ Aluminum
Drivetrain3 × 10
GroupsetXT, SLX
BrakesShimano SLX Hydraulic Disc
Learn about Rocky Mountain
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Thunderbolt 750
Other Trail bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

31 mph

Thunderbolt 750

26 mph

Similar Bikes

Highest gear

(descending)

Sizing
XS

5'1" – 5'6"

SM

5'4" – 5'9"

MD

5'7" – 6'0"

LG

5'10" – 6'3"

XL

6'0" – 6'5"

🐐 Estimated

Rider Fit Notes

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Reviews

Summary

The Rocky Mountain Thunderbolt is a versatile trail bike praised for its efficient climbing, playful yet capable downhill performance, and comfortable all-day ride quality. Its balanced geometry and Smoothlink suspension system contribute to snappy handling and a smooth ride. While it excels on flowy singletrack and technical climbs, some riders may find it less suited for aggressive descents or prefer updates like tubeless-ready rims and a dropper post.

Pros
  • Efficient climbing and playful downhill performance

  • Comfortable for all-day rides

  • Balanced geometry and Smoothlink suspension for snappy handling

  • Versatile on flowy singletrack and technical climbs

  • Stiff and efficient hydroformed frame

Cons
  • Relatively heavy XC setup

  • Lack of tubeless-ready rims and dropper post in some models

  • May require active riding style on descents

Key Quotes
the Thunderbolt is just right for weekend trips to places like the Kingdom Trails, and for my everyday local XC trails
Bikerumor logoBikerumor
Rocky Mountain claims they have optimized the design.
Canadian Cycling Magazine logoCanadian Cycling Magazine
FAST AS LIGHTNING
MBR logoMBR
The Thunderbolt has made my time climbing far more enjoyable than before
NSMB logoNSMB
an electronic shifting 27.5-inch XC rig sure to draw both cheers and jeers
MTBR logoMTBR

Feedback?

View all reviews

Mountain Bike Action
Bike Test: Rocky Mountain Thunderbolt 770MSL

May 2015 · McCoy

It’ll flow through any section of trail with the right amount of finesse and confidence

Read Review

BIKE Magazine
Rocky Mountain Thunderbolt | 2015 Bible of Bike Tests

Jan 2015

The Rocky Mountain Thunderbolt proved itself as one of the most capable trail bikes in this year's Bible of Bike.

Read Review

NSMB
Rocky Mountain Thunderbolt 770: Reviewed

Oct 2014

“The Thunderbolt has made my time climbing far more enjoyable than before, and I get a small sense of satisfaction by simply cruising past people on the way up the hill with a smile and a wave…”

Read Review

MTBR
Eurobike: Rocky Mountain Thunderbolt 799 MSL

Sep 2014 · Don Palermini

Rocky Mountain’s Thunderbolt 799 MSL an electrifying XC rig with a shocking price tag. - Mtbr.com

Read Review

Dirt Mountainbike
Rocky Mountain Thunderbolt goes carbon for 2015

Aug 2014 · Dirt HQ

Carbon continues to infiltrate every corner of the market, the latest to turn to the black stuff is Rocky Mountain Thunderbolt...

Read Review

Canadian Cycling Magazine
Rocky Mountain releases Thunderbolt MSL

Aug 2014 · Charles Bryer

With shorter chainstays, a lower stand-over, additional adjustability and improved pivot technologies the new 2015 carbon Thunderbolt MSL is Rocky

Read Review

Bikerumor
One Ride Review: Rocky Mountain Thunderbolt Short Travel XC/Trail Mountain Bike

Jul 2014 · John Herron

Over the last couple years the 27.5 shorter-travel (115-130mm) platform has been blurring the lines between XC and Trail categories.  Rocky Mountain’s Thurnderbolt is designed to handle the rowdy side of XC riding, and is a capable setup for almost everything shy of Enduro racing. The aluminum frame has four available build specs, and I …

Read Review

MBR
Hottest bikes of 2014: Rocky Mountain Thunderbolt 750 £2,999 - MBR

Feb 2014 · Danny Milner

Why the Rocky Mountain Thunderbolt is rejuvinating a brand

Read Review

Geometry
Specs
Build
Frame

FORM™ Alloy Custom Hydroformed Frame ABC™ Pivots Tapered Head Tube Press Fit BB Internal Cable Routing Internal \"Stealth\" Dropper Post Routing

Fork

Fox 32 Float 27.5 120 CTD

Travel120mm

Spring TypeAir

Shock

Fox Float CTD Custom Race Valved

Travel120mm

Bottom Bracket

Race Face Team XC Press Fit

Headset

Cane Creek Ten Series: ZS44mm Top / ZS56mm Bottom Tapered

Stem

Race Face 6° x 70-90mm

Handlebar

Race Face Evolve 3/4 Rise Ø31.8mm x 725mm x 5° Sweep

Saddle

Rocky Mountain XC Light

Seatpost

Race Face 30.9mm x 375mm

TypeRigid

Grips

Rocky Mountain Lock On XC

Groupset
Rear Derailleur

Shimano XT Shadow Direct Mount 10spd

Front Derailleur

Shimano SLX E Mount 3x10spd

Crank

Race Face Turbine 170-175mm 42/32/24T 10spd

Shifters

Shimano SLX Rapid Fire I-Spec 3x10spd

Cassette

Shimano HG62 11-36T 10spd

Chain

Shimano HG54 10spd

Brakes

Shimano SLX Hydraulic Disc 180/160mm

TypeShimano SLX Hydraulic Disc

Brake Levers

Shimano SLX I-Spec Shifter Mount

Wheels
Rims

Wheeltech Inferno 23 by SUNringlé

Spokes

DT Swiss Competition

Front Hub

Shimano SLX / Centerlock / 32H / 15mm Axle

Rear Hub

Shimano SLX / Centerlock / 32H / 12 x 142mm Axle

Tires

Continental X King Folding 27.5\" x 2.2\"

Rider Notes
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First added September 9

Last updated April 14

Not listed for 1,874 days